What is the pH of a solution that results from the complete neutralization of an HCl solution with a KOH solution? (1) 1

(2) 7

(3) IO

(4) 4

What are the spectator ions in 2h+ + so42- + ca2+ + 2r → caso4 + 2h+ + 21?

What is the relation between concentration of reactants and the rate of chemical reaction?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.